CN105385167B - Addition-type silicon rubber and preparation method thereof - Google Patents

Addition-type silicon rubber and preparation method thereof Download PDF

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CN105385167B
CN105385167B CN201510923861.1A CN201510923861A CN105385167B CN 105385167 B CN105385167 B CN 105385167B CN 201510923861 A CN201510923861 A CN 201510923861A CN 105385167 B CN105385167 B CN 105385167B
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parts
coupling agent
type silicon
silicon rubber
addition
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CN105385167A (en
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刘光华
付子恩
黄文哲
陈建军
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Guangzhou Baiyun Technology Co ltd
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Guangzhou Baiyun Chemical Industry Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

The invention discloses a kind of addition-type silicon rubber and preparation method thereof, the raw material of the addition-type silicon rubber forms in parts by weight, including:100 parts of base-material;2~10 parts of containing hydrogen silicone oil A;3~8 parts of containing hydrogen silicone oil B;0.5~3 part of dially phthalate;0.01~0.2 part of inhibitor;Catalyst is in terms of Pt, 5~20ppm;The raw material composition of the base-material is in parts by weight, including 100 parts of vinyl-terminated silicone fluids, 10~30 parts of fume colloidal silicas, 2~8 parts of coupling agent A and 2~8 parts of coupling agent B, the coupling agent A is the silane coupling agent containing phenyl, and the coupling agent B is the silane coupling agent containing ester group.Addition-type silicon rubber adhering speed of the present invention is fast, has good cementability to plastic basis materials such as PET, PBT;Solidification is rapid, and construction efficiency is high;Single group is packaged, easy for construction.

Description

Addition-type silicon rubber and preparation method thereof
Technical field
The present invention relates to high molecule sealing materials, more particularly to a kind of addition-type silicon rubber and preparation method thereof.
Background technology
There is addition-type silicon rubber high-low temperature resistant, electric insulating quality, when solidification not to generate by-product, and coefficient of thermal expansion is small, Shrinking percentage is small, non-toxic and tasteless, non-corrosive, has good shockproof, sealing, humidity resistance, and have physiological inertia, in vapour Vehicle, electronic apparatus, aerospace, medical field have a wide range of applications.Relative to condensed type silicon rubber, add-on type silicon rubber Glue its not by influence of moisture, can be needed to adjust curing rate according to application, have and realize deep cure and quick-setting excellent Gesture.However, due to the characteristic of its molecular structure itself, there is most of base materials especially plastic basis material viscous in addition-type silicon rubber The defect of connecing property difference, this keeps it considerably limited in the application of the industrial circles such as electronic apparatus, illumination, automobile.
In recent years, the research hotspot that cementability is always addition-type silicon rubber is promoted.By brush silane coupling agent or thickening is added Agent is more common method, and correlative study is also seen in report.CN102942896A discloses a kind of high adhesiveness add-on type Silicon rubber, adhesive strength can reach 2.5MPa, but it is bonding to which kind of material that it, which is not listed,.CN103739848A A kind of ester modified tackifier of the boric acid suitable for addition-type silicon rubber are disclosed, preferable bonding is all had to PPA, metal etc., But its hardening time needs 4 hours.CN104531003A discloses a kind of borate tackifier containing unsaturated bond, by itself plus Enter in addition-type silicon rubber, there is good cementability to stainless steel and PET film, heating time is also above 1h.However, Industrial glue field, the requirement to construction efficiency is higher and higher, how to realize addition-type silicon rubber within extremely short hardening time Realize becomes a bottleneck to the rapid link of base material, as in 5min or even in 1min.But we see not yet so far Relevant technology discloses.
Invention content
Based on this, it is necessary to which a kind of addition-type silicon rubber of offer and preparation method thereof, the addition-type silicon rubber can be with Realize the rapid link to plastics such as PET, PBT.
For achieving the above object, specific technical solution is as follows:
A kind of addition-type silicon rubber, raw material form in parts by weight, including:
The raw material of the base-material forms in parts by weight, including 100 parts of vinyl-terminated silicone fluids, 10~30 parts of vapor phase method hard charcoals Black, 2~8 parts of coupling agent A and 2~8 parts of coupling agents B, the coupling agent A are the silane coupling agent containing phenyl, and the coupling agent B is Silane coupling agent containing ester group.
In wherein some embodiments, the coupling agent A is styrene ethyl trimethoxy silane, phenyl trimethoxy silicon One kind or combinations thereof in alkane, aminophenyl trimethoxy silane, bis- (front three oxygen silicon base ethyl) benzene;Coupling agent B is (3- acryloyls Oxygen propyl group) trimethoxy silane, (3- methacryloxypropyls) trimethoxy silane, (3- methacryloxypropyls) three be different One kind in npropoxysilane or combinations thereof.
In wherein some embodiments, the viscosity of the vinyl-terminated silicone fluid is 500mPa.s~5000mPa.s (25 DEG C).
In wherein some embodiments, the specific surface area of the fume colloidal silica is 100~380m2/g。
In wherein some embodiments, the specific surface area of the fume colloidal silica is 200~300m2/g。
In wherein some embodiments, the containing hydrogen silicone oil A is side chain containing hydrogen silicone oil, hydrogen content be 0.75wt%~ 1.60wt%, viscosity are 50~200mPa.s (25 DEG C);The containing hydrogen silicone oil B is side chain containing hydrogen silicone oil, and hydrogen content is 0.05wt%-0.50wt%, viscosity are 100~300mPa.s (25 DEG C).
In wherein some embodiments, the dially phthalate is for diallyl phthalate or/and to benzene Diformazan diallyl phthalate.
In wherein some embodiments, the inhibitor is 1- acetenyl -1- cyclohexanol, four silicon of tetramethyl tetravinyl ring Oxygen alkane, 2- methyl -3- butynyl -2- alcohol, 3- methyl-1s-acetenyl -3- alcohol, 3,5- dimethyl -1- hexin base -3- alcohol, 3- first One kind or combinations thereof in base -1- dodecyne -3- alcohol;The catalyst is chloroplatinic acid, chloroplatinic acid-isopropanol complex, chlorine platinum One kind or combinations thereof in acid-divinyl tetramethyl disiloxane complex compound.
The present invention also provides a kind of preparation methods of above-mentioned addition-type silicon rubber, include the following steps:
A, by the vinyl-terminated silicone fluid, coupling agent A, coupling agent B, pure water is added in kneader, then mixing is added The fume colloidal silica, mixed at room temperature reaction, is warming up to 120~150 DEG C and vacuumizes, obtain base-material;
B, at room temperature, the base-material is added in planetary mixer or high velocity dispersators, then will be described hydrogeneous Silicone oil A, containing hydrogen silicone oil B, dially phthalate, inhibitor be added in planetary mixer or high velocity dispersators with it is described Base-material is mixed together;
C, the catalyst is added, vacuumize stirring to get.
The additive amount of pure water is 1~5 parts by weight in above-mentioned preparation method.
In wherein some embodiments, the preparation method comprises the following steps:
A, by the vinyl-terminated silicone fluid, coupling agent A, coupling agent B, pure water is added in kneader, mixes 3~10min, Then fume colloidal silica is added portionwise, mixed at room temperature reacts 1~2h, is warming up to 120~150 DEG C and vacuumizes 1~3h, obtain base Material;
B, at room temperature, the base-material is added in planetary mixer or high velocity dispersators, then will be described hydrogeneous Silicone oil A, containing hydrogen silicone oil B, dially phthalate, inhibitor be added in planetary mixer or high velocity dispersators with it is described Base-material is mixed together 10~30min;
C, the catalyst is added, vacuumize 5~15min of stirring to get.
Inventor had found by numerous studies, addition-type silicon rubber it is bonding with plastic basis material not only in sizing material Polymer-vinyl silicone oil have relationship, also have sizable relationship with such as white carbon of the powder in sizing material.On the one hand, with it is existing There is the technical solution that technology is directly added into coupling agent to compare, the present invention is by silane coupling agent containing phenyl and containing the silane of ester group Coupling agent is jointly surface-treated the white carbon in sizing material, by hydrolysis-condensation reaction, to contain phenyl and ester group One end of silane coupling agent be grafted to the surface of white carbon, shorten the time needed for the bonding in solidification process, grafting is even The molecular structure of the phenyl and the plastics such as ester group and PET, PBT that join the agent other end has natural similar compatibility characteristic, is conducive to Bonding of the colloid to plastic basis material.On the other hand, dially phthalate can play synergistic supplement with above-mentioned coupling agent Effect, one end are the benzoyl groups for having interaction with PET, PBT, and with ontology fast reaction can occur for one end Allyl can form good function served as bridge between base material and colloid, play good adhesive effect.
To sum up, present invention advantageous effect compared with the prior art and advantage are:
(1) adhering speed is fast, has good cementability to plastic basis materials such as PET, PBT;
(2) solidification is rapid, and construction efficiency is high;
(3) single group is packaged, easy for construction.
Specific implementation mode
Below with reference to specific embodiment, the present invention will be further described.
Raw material used by the embodiment of the present invention is commercially available convenient source.
Embodiment 1
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 500mPa.s (25 DEG C), 8 parts of styrene ethyl trimethoxy silicon Alkane, 8 parts of (3- methacryloxypropyls) trimethoxy silanes, 5 parts of pure water are added in kneader, mixed at room temperature 5min, so After 30 parts of fume colloidal silica (specific surface area 200m are added portionwise2/ g), mixed at room temperature 2h is warming up to 150 DEG C and vacuumizes 2h, It is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 10 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 0.75wt%, the side chain containing hydrogen silicone oil that 8 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.1wt%, 0.5 portion of diallyl phthalate, 0.05 part of 1- acetenyl -1- cyclohexanol, is stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Embodiment 2
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by viscosity be 5000mPa.s (25 DEG C) 100 parts of vinyl-terminated silicone fluid, 2 parts of aminophenyl trimethoxy silanes, 2 Part (3- acryloxypropyls) trimethoxy silane, 1 part of pure water are added in kneader, mixed at room temperature 5min, are then added in batches Enter 10 parts of fume colloidal silica (300m2/ g), mixed at room temperature 1h is warming up to 120 DEG C and vacuumizes 3h, is cooled to room temperature to obtain base Material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 2 parts of viscosity are 50mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.60wt%, the side chain Silicon Containing Hydrogen that 3 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is 0.50wt% Oil, 2 parts of diallyl p phthalates, 0.03 part of 2- methyl -3- butynyl -2- alcohol are stirred 30min;
C, 6ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains finished product.
Embodiment 3
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by viscosity be 2000mPa.s (25 DEG C) 100 parts of vinyl-terminated silicone fluid, 5 parts of bis- (front three oxygen silicon base ethyl) benzene, 5 parts of (3- methacryloxypropyls) three isopropoxy silane, 3 parts of pure water are added in kneader, mixed at room temperature 10min, so After 20 parts of fume colloidal silica (specific surface area 200m are added portionwise2/ g), mixed at room temperature 2h is warming up to 150 DEG C and vacuumizes 2h, It is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 8 parts of viscosity are 150mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.0wt%, the side chain containing hydrogen silicone oil that 8 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.1wt%, 1.5 portions of diallyl phthalates, 0.05 part of 1- acetenyl -1- cyclohexanol, are stirred 30min;
C, 10ppm chloroplatinic acids-isopropanol complex is added, vacuumizes stirring 10min, obtains finished product.
Embodiment 4
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C), 2.5 parts of styrene ethyl trimethoxies Silane, 2.5 parts of bis- (front three oxygen silicon base ethyl) benzene, 5 parts of (3- methacryloxypropyls) trimethoxy silanes, 4 parts of pure water add Enter into kneader, mixed at room temperature 5min, 25 parts of fume colloidal silica (specific surface area 200m are then added portionwise2/ g), room temperature 1h is mixed, 150 DEG C is warming up to and vacuumizes 2h, be cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 10 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.5wt%, the side chain containing hydrogen silicone oil that 8 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.05wt%, 1 part of diallyl p phthalate, 0.05 part of 1- acetenyl -1- cyclohexanol, is stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Embodiment 5
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C), 5 parts of styrene ethyl trimethoxy silicon Alkane, 2.5 parts of (3- methacryloxypropyls) trimethoxy silanes, 2.5 parts of (3- methacryloxypropyls) three isopropoxies Silane, 5 parts of pure water, is added in kneader, mixed at room temperature 5min, and 25 parts of fume colloidal silica (specific surfaces are then added portionwise Product 200m2/ g), mixed at room temperature 1h is warming up to 150 DEG C and vacuumizes 2h, is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 10 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.0wt%, the side chain containing hydrogen silicone oil that 8 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.5wt%, 3 Part diallyl p phthalate, 0.05 part of 1- acetenyl -1- cyclohexanol are stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Embodiment 6
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C), 5 parts of styrene ethyl trimethoxy silicon Alkane, 5 parts of (3- methacryloxypropyls) trimethoxy silanes, 2 parts of pure water are added in kneader, mixed at room temperature 5min, so After 25 parts of fume colloidal silica (specific surface area 200m are added portionwise2/ g), mixed at room temperature 1h is warming up to 150 DEG C and vacuumizes 2h, It is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 8 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.55wt%, the side chain containing hydrogen silicone oil that 8 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.3wt%, 1 portion of diallyl phthalate, 1 part of diallyl p phthalate, 0.05 part of 1- acetenyl -1- cyclohexanol are stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Embodiment 7
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C), 5 parts of styrene ethyl trimethoxy silicon Alkane, 5 parts of (3- methacryloxypropyls) three isopropoxy silane, 2 parts of pure water are added in kneader, mixed at room temperature 5min, Then 25 parts of fume colloidal silica (specific surface area 200m are added portionwise2/ g), mixed at room temperature 1h is warming up to 150 DEG C and vacuumizes 2h is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 10 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.20wt%, the side chain Silicon Containing Hydrogen that 7 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.35wt% Oil, 2 portions of diallyl phthalates, 0.01 part of 1- acetenyl -1- cyclohexanol are stirred 30min;
C, 5ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains finished product.
Embodiment 8
A kind of addition-type silicon rubber, raw material composition are as follows:
Specific preparation method includes the following steps:
A, by 100 parts of the vinyl-terminated silicone fluid that viscosity is 5000mPa.s (25 DEG C), 6 parts of styrene ethyl trimethoxy silicon Alkane, 6 parts of (3- methacryloxypropyls) trimethoxy silanes, 3 parts of pure water are added in kneader, mixed at room temperature 5min, so After 20 parts of fume colloidal silica (specific surface area 200m are added portionwise2/ g), mixed at room temperature 1h is warming up to 150 DEG C and vacuumizes 2h, It is cooled to room temperature to obtain base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds that 9 parts of viscosity are 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 0.90wt%, the side chain containing hydrogen silicone oil that 5 parts of viscosity are 100mPa.s (25 DEG C), hydrogen content is 0.3wt%, 2 parts of diallyl p phthalates, 0.2 part of 1- acetenyl -1- cyclohexanol, are stirred 30min;
C, 20ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Comparative example 1
A kind of addition-type silicon rubber, raw material composition are as follows:
Preparation method includes the following steps:
A, 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C) is added in kneader, is then added in batches Enter 25 parts of fume colloidal silica (specific surface area 200m2/ g), mixed at room temperature 2h obtains base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds 6 parts of viscosity 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.50wt%, 3 parts of viscosity 100mPa.s (25 DEG C), the side chain containing hydrogen silicone oil that hydrogen content is 0.5wt%, 0.05 part of 1- acetenyl -1- cyclohexanol, is stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Comparative example 2
A kind of add-on type rubber, raw material composition are as follows:
Preparation method includes the following steps:
A, 100 parts of the vinyl-terminated silicone fluid that viscosity is 2000mPa.s (25 DEG C) is added in kneader, is then added in batches Enter 25 parts of fume colloidal silica (specific surface area 200m2/ g), mixed at room temperature 2h obtains base-material;
B, it takes 100 parts of above-mentioned base-material to planetary mixer, adds 6 parts of viscosity 200mPa.s (25 DEG C), hydrogen content is The side chain containing hydrogen silicone oil of 1.50wt%, 3 parts of viscosity 100mPa.s (25 DEG C), the side chain containing hydrogen silicone oil that hydrogen content is 0.5wt%, 1 Part diallyl phthalate, 1 part of diallyl p phthalate, 0.05 part of 1- acetenyl -1- cyclohexanol are stirred 30min;
C, 10ppm chloroplatinic acids-divinyl tetramethyl disiloxane complex compound is added, vacuumizes stirring 10min, obtains into Product.
Above-described embodiment and the sizing material of comparative example are done respectively, tensile shear experiment, condition of cure are done to PET and PBT material 150 DEG C/1min, experimental result is as follows:
Table 1 is bonded test result
By upper table it can be found that embodiment 1-8 all has good cementability to plastic basis materials such as PET and PBT, stretch Adhesive strength is 100% cohesional failure near or above 2MPa.It is on the other side to be, the silicon not using the present invention of comparative example 1 Alkane coupling agent A, B carry out white carbon processing, and dially phthalate is not also added in sizing compound formula, therefore, to PET and PBT base non-bindings, comparative example 2 add dially phthalate in sizing compound formula, it can be seen that it is to PET, PBT base Material still has having certain effect, and has certain synergistic supplementary function.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (9)

1. a kind of addition-type silicon rubber, which is characterized in that its raw material forms in parts by weight, including:
The raw material of the base-material forms in parts by weight, including 100 parts of vinyl-terminated silicone fluids, 10~30 parts of fume colloidal silicas, 2 ~8 parts of coupling agent A and 2~8 parts of coupling agent B, the coupling agent A are the silane coupling agent containing phenyl, the coupling agent B be containing The silane coupling agent of ester group;
The containing hydrogen silicone oil A is side chain containing hydrogen silicone oil, and hydrogen content is 0.75wt%~1.60wt%, viscosity is 50~ 200mPa·s;The containing hydrogen silicone oil B is side chain containing hydrogen silicone oil, hydrogen content 0.05wt%-0.50wt%, viscosity is 100~ 300mPa·s。
2. addition-type silicon rubber according to claim 1, which is characterized in that the coupling agent A is styrene ethyl front three Oxysilane, phenyltrimethoxysila,e, aminophenyl trimethoxy silane, one kind in bis- (front three oxygen silicon base ethyl) benzene or its Combination;Coupling agent B be (3- acryloxypropyls) trimethoxy silane, (3- methacryloxypropyls) trimethoxy silane, One kind or combinations thereof in (3- methacryloxypropyls) three isopropoxy silane.
3. addition-type silicon rubber according to claim 1, which is characterized in that the viscosity of the vinyl-terminated silicone fluid is 500mPas~5000mPas.
4. addition-type silicon rubber according to claim 1, which is characterized in that the specific surface area of the fume colloidal silica is 100~380m2/g。
5. addition-type silicon rubber according to claim 4, which is characterized in that the specific surface area of the fume colloidal silica is 200~300m2/g。
6. addition-type silicon rubber according to claim 1, which is characterized in that the dially phthalate is adjacent benzene two Formic acid diallyl or/and diallyl p phthalate.
7. addition-type silicon rubber according to claim 1, which is characterized in that the inhibitor is 1- acetenyl -1- hexamethylenes Alcohol, t etram-ethyltetravinylcyclotetrasiloxane, 2- methyl -3- butynyl -2- alcohol, 3- methyl-1s-acetenyl -3- alcohol, 3,5- bis- One kind or combinations thereof in methyl-1-hexin base-3- alcohol, 3- methyl-1s-dodecyne-3- alcohol;The catalyst is chloroplatinic acid, chlorine One kind or combinations thereof in platinic acid-isopropanol complex, chloroplatinic acid-divinyl tetramethyl disiloxane complex compound.
8. a kind of preparation method such as claim 1~7 any one of them addition-type silicon rubber, which is characterized in that including with Lower step:
A, by the vinyl-terminated silicone fluid, coupling agent A, coupling agent B, pure water is added in kneader, mixing, then described in addition Fume colloidal silica, mixed at room temperature reaction, is warming up to 120~150 DEG C and vacuumizes, obtain base-material;
B, at room temperature, the base-material is added in planetary mixer or high velocity dispersators, then by the containing hydrogen silicone oil A, containing hydrogen silicone oil B, dially phthalate, inhibitor are added in planetary mixer or high velocity dispersators and the base-material It is mixed together;
C, the catalyst is added, vacuumize stirring to get.
9. the preparation method of addition-type silicon rubber according to claim 8, which is characterized in that include the following steps:
A, by the vinyl-terminated silicone fluid, coupling agent A, coupling agent B, pure water is added in kneader, mixes 3~10min, then Fume colloidal silica is added portionwise, mixed at room temperature reacts 1~2h, is warming up to 120~150 DEG C and vacuumizes 1~3h, obtain base-material;
B, at room temperature, the base-material is added in planetary mixer or high velocity dispersators, then by the containing hydrogen silicone oil A, containing hydrogen silicone oil B, dially phthalate, inhibitor are added in planetary mixer or high velocity dispersators and the base-material It is mixed together 10~30min;
C, the catalyst is added, vacuumize 5~15min of stirring to get.
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